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You Are On Multi Choice Question Bank SET 2695
134751. It is difficult to magnetise steel because of its:
(A): Low permeability (B): High permeability (C): High density (D): High retentivity
134752. One Farad is:
(A): One Coulomb per volt (B): One volt per Coulomb (C): Joule per volt (D): Coulomb Joules
134753. Which of the following acts as depolarizer in a Lechlanche cell?
(A): Zinc Chloride (B): Carbon Powder (C): Manganese dioxide (D): Ammonium Chloride
134754. What is the method of heat transfer accomplished in a hot water boiler?
(A): Convection (B): Conduction (C): Radiation (D): None of the above
134755. Which motor is suitable for rolling mills?
(A): DC shunt motor (B): DC series motor (C): DC cumulative motor (D): DC differential motor
134756. Composition of fuse wire:
(A): Lead 40 tin 60 (B): Lead 80 tin 20 (C): Lead 50 tin 50 (D): Lead 60 tin 40
134757. Rated capacities of IC TP 300A switch:
(A): 500 V (B): 1000 V (C): 230 V (D): 250 V
134758. XC=
(A): R-XL (B): 2pi FI (C): 2 pi FC (D): (1)/(2piFC)
134759. The power factor of a purely resistive circuit is:
(A): Zero (B): Unity (C): Leading (D): Lagging
134760. In star connection line current=
(A): Phase current (B): Square root of 3 phase current (C): Square root of 2 phase current (D): None of the above
134761. 1 litre of water--------
(A): 980 gram (B): 1000 gram (C): 930 gram (D): 910 gram
134762. Melting point of copper is------
(A): 1230 Degree C (B): 1085 Degree C (C): 1088 Degree C (D): 1083 Degee C
134763. In H.S.S. 18:4:1 means-------
(A): Tungsten:Vanadium:Chromium (B): Tungsten:Chromium:Vanadium (C): Vanadium:Tungsten:Chromium (D): Chromium:Vanadium:Tungsten
134764. Which colour wire is recommended for earth connection as per ISI Code?
(A): Red (B): Black (C): Blue (D): Green
134765. What is the value of cos 0 Degree?
(A): 1 (B): 0 (C): Square root of 2 (D): Square root of 3
134766. On which factors the frequency depends?
(A): Directly proportional to speed and no.of poles (B): Inversely proportional to speed and no.of poles (C): Directly proportional to back emf (D): Directly proportional to applied voltage and back emf
134767. What is the complete formula for frequency?
(A): F=(PxxN)/(60) (B): F=(Ns-N)/(60) (C): F=(PxxE)/(120) (D): F=(PxxNS)/(120)
134768. Where the Damper winding is placed in synchronous motor?
(A): Shaft (B): Poles (C): Poleshoes (D): All of the above
134769. Capacity of a capacitor filled in table fan or ceiling fan:
(A): 1 to 1.5 meu f (B): 3 to 3.5 meu f (C): 2.5 to 3 meu f (D): 2 to 2.5 meu f
134770. How the current coils and pressure coils are connected in megger?
(A): At 90 Degree to each other (B): At 60 Degree to each other (C): At 45 Degree to each other (D): At 35 Degree to each other
134771. Supertension cables from:
(A): 33000 Volt to 66000 Volt (B): 1000 Volt 11000 Volt (C): 11000 Volt to 22000 Volt (D): 22000 Volt to 33000 Volt
134772. The distance between two adjacent line poles is called:
(A): Sag (B): Span (C): HSL (D): Guarding
134773. The distance that must be provided between line conductors for 440 V:
(A): 50 cm-60 cm (B): 45 cm-60 cm (C): 45 cm-50 cm (D): 30 cm-45 cm
134774. Rotary converter runs at:
(A): Below synchronous speed (B): Synchronous speed (C): Above synchronous speed (D): All of the above
134775. A series RL circuit has a resistance of 30 Ohm and inductive resistance of 40 Ohm.The impedance is-------
(A): 70 Ohm (B): 50 Ohm (C): 10 Ohm (D): 35 Ohm
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